August 26, 2026Published by Clare Adamson at August 26, 2026Categories Science & Tech WorldKenyan Teens Win $12.5K for Vehicle Exhaust Filter Made From Farm WasteAt just 17 years old, Fredrick Njoroge Kariuki and Miron Onsarigo have developed HewaSafi, a low-cost vehicle exhaust filtration system designed to reduce harmful emissions at
